A pejorative term used to imply someone enjoys sticking their fingers up someone else's anus, most commonly used as a gay slur. The name comes from pin tumbler locks as you need to stick a key or pick into the lock to move the pins to open the lock. The finger would be the key and the ass is the lock.
by Fyce September 2, 2017

by schneider from friends December 4, 2021

Little wannabe gang members that hang around parramatta and post tiktoks about themselves they are all under housing comission and their fathers dropped out in year 8. their fathers are either drug dealers or tradies there is no inbetween.
by harrygaussie November 30, 2022

just tried to pull off a sly insertion into my girlfriends clag hole but she clamped up and gave me the icy bum treatment.
by ravenutter November 9, 2012

by Propa Bum February 8, 2018

Prabh: Yoo! Aaliyah sent pics of Nathan’s bumbum!
Aaliyah: Yeha he was hella thicc you could call it a bum bum bum!!
Aaliyah: Yeha he was hella thicc you could call it a bum bum bum!!
by Prabhs December 17, 2018

Being too busy
by YesMrsDaisy May 30, 2018
